<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>列表过滤</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <ul>
            <li v-for="(p,index) of filPersons" :key="index">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip=false;
    //用watch实现
    // new Vue({
    //     el:'#root',
    //     data:{
    //         keyWord:'',
    //         persons:[
    //             {id:'001',name:'马冬梅',age:18,sex:'女'},
    //             {id:'002',name:'周冬雨',age:19,sex:'女'},
    //             {id:'003',name:'周杰伦',age:20,sex:'男'},
    //             {id:'004',name:'任嘉伦',age:21,sex:'男'}
    //     ],
    //     filPersons:[]
    //     },
    //     watch: {
    //         keyWord:{
    //             immediate:true,
    //             handler(val){
    //                     this.filPersons=this.persons.filter((p)=>{
    //                     return p.name.indexOf(val)!==-1
    //                 })
    //             }
    //         }
    //     }
    // })

    //用computer实现
    new Vue({
        el:'#root',
        data:{
            keyWord:'',
            persons:[
                {id:'001',name:'马冬梅',age:18,sex:'女'},
                {id:'002',name:'周冬雨',age:19,sex:'女'},
                {id:'003',name:'周杰伦',age:20,sex:'男'},
                {id:'004',name:'任嘉伦',age:21,sex:'男'}
        ]
        },
        computed: {
            filPersons(){
                    return this.persons.filter((p)=>{
                       return p.name.indexOf(this.keyWord)!==-1
                   })
            }
        }
    })
</script>
</html>